Overt and covert processing of left-side information in unilateral neglect investigated with chimeric drawings

Journal of Clinical and Experimental Neuropsychology
A PeruS Aglioti

Abstract

Overt and covert processing of contralesional information was investigated in 6 right-brain-damaged (RBD) patients with or without left hemispatial neglect by using three bedside tests that require the analysis of whole, half, and chimeric drawings. In the first task, patients named these stimuli. In the second task, patients designated as "same" or "different" drawings in a pair where one drawing was always whole and the other could be whole, half, or chimeric. In the third task, patients pointed to the more veridical, complete drawing that was presented with one half drawing, and two chimeric drawings. Although patients with no neglect performed without error in all conditions, patients with severe neglect based their performance on the analysis of the right side of the stimuli. In patients with mild neglect, not only did performance rely upon the right side of stimuli but it was also modulated by left-side information acquired either overtly or unconsciously.

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Citations

Nov 18, 2005·Experimental Brain Research·Andrea PeruSalvatore M Aglioti
Feb 26, 2008·Experimental Brain Research·Andrea Peru, Leonardo Chelazzi
Feb 9, 1999·Journal of Cognitive Neuroscience·S AgliotiA Peru
May 13, 2008·Cortex; a Journal Devoted to the Study of the Nervous System and Behavior·Jérôme SackurStanislas Dehaene
Mar 17, 2010·Journal of Neuropsychology·Sergio Della SalaRobert H Logie
Aug 26, 2004·Neuropsychologia·Domenica BuetiSalvatore M Aglioti
Jul 26, 2006·Brain Research·Andrea Peru, Jean Sebastien Morgant
Aug 16, 2005·Brain Research. Cognitive Brain Research·Cosimo UrgesiSalvatore M Aglioti

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